Only place I disagree would be 18-19. I'd rate it after 10-11 and 14-15. IMO, he wasn't obviously in his physical prime, but that season was one of the greatest solo efforts I've seen. He was a one man army in LL and was by and far our best CL goalscorer in a declining team. So given context, I rate the season very highly.
True, maybe I was a little bit harsh,but on the other hand, this season also has some issues.
First of all, there is no doubt that Leo CARRIED the team in the UCL, but bear in mind that we had some very lucky draws.
For example in the R16 we had to face PSG in 2017 and Chelsea in 2018, while our opponent in 2019 was Lyon.
In the quarterfinals, we faced MU(who were a shell of their former selves), while in 2017 we had to face prime Juventus.
Finally, in the semis we faced prime Liverpool, everyone knows what happened... I would only like to point out that while Leo scored two goals and the second one is maybe his best FK goal ever, the overall performance is a bit overrated. I've seen people compare it to the performance vs Bayern in 2015 for example.
Furthermore, while Leo was sensational in the League and had many many memorable moments, it doesn't help that Real was the worst they've been the last many decades and Atletico were also mediocre. Thus, the legacy of the season and the achievement are slightly diminished.
The icing on the cake is the lost CDR final vs Valencia.
All in all,obviously a great season, a big carry job. Leo was mostly sensational and deserved the 2019 Ballon D'Or, but I think that he has had a few better seasons.